• Jordan R Covvey and Anthony J Guarascio.
• Division of Pharmaceutical, Administrative and Social Sciences, Duquesne University School of Pharmacy, Pittsburgh, Pennsylvania, USA.
• J. Intern. Med. 2022 Jan 1; 291 (1): 516351-63.

AbstractLefamulin is a novel antibiotic agent within the pleuromutilin derivative class approved for the treatment of community-acquired bacterial pneumonia (CABP) by the United States Food and Drug Administration and the European Commission in 2019 and 2020, respectively. The objective of this article is to provide a summary of clinically relevant data underlying lefamulin and to provide recommendations for its place in therapy. In vitro data establish lefamulin's activity against a number of Gram-positive, Gram-negative and atypical organisms relevant in the treatment of CABP, including Streptococcus pneumoniae, Haemophilus influenzae, Moraxella catarrhalis, Legionella pneumophila, Mycoplasma pneumoniae and Chlamydophila pneumoniae. Two phase-3 studies, the Lefamulin Evaluation Against Pneumonia trials, established non-inferiority of lefamulin against moxifloxacin in the treatment of CABP, including the sequential transition from intravenous to oral therapy and across a broad set of patient demographics and severities. Pooled and post hoc analyses have confirmed these effects for a variety of subgroups and secondary endpoints. Real-world study data post-approval have largely not yet emerged for lefamulin, and there is a need for further investigation into safety/efficacy for off-label indications such as acute bacterial skin and skin structure infections and sexually transmitted infections. Further data regarding tolerability, particularly with long-term use, as well as the emergence of resistance over time, are still undefined.© 2021 The Association for the Publication of the Journal of Internal Medicine.

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